KL 1834 then U2 2172 at Schiphol
Stuttgart → Amsterdam → Manchester
Timetable, Amsterdam time
19:55KL 1834 from Stuttgart at the gate
14:55U2 2172 to Manchester leaves the gate
19 h apart on the timetable, overnight
U2 2172 leaves 19 h after KL 1834 arrives on the timetable: more than half a day, so not a connection we count.